Brocade MLX Series and Brocade NetIron XMR Diagnostic Guide ...

TCAM partitioning and usage 2Configuring adequate TCAM resources for VPLS CPU protectionThere must be adequate TCAM resources available to use Virtual Private LAN Service (VPLS) CPUprotection. Each endpoint and each uplink port requires a single TCAM entry. In addition, if anendpoint is a trunk port, one entry is required for each port in the trunk. To determine the numberof entries required for your system, add the number of VPLS endpoints, ports within a trunk portused as an endpoint, and uplink ports. Use this number with the system-max hw-floodingcommand to configure adequate TCAM resources. For more information and an example of theresult of this command, refer to the Brocade MLX Series and NetIron Family Configuration Guide.Common diagnostic scenariosWhen troubleshooting TCAM issues, it is helpful to understand how to determine the mostappropriate TCAM settings for your system and to know when a device is running out of TCAM. Thefollowing sections describe how to work with TCAM settings.Determining appropriate TCAM settingsWhen a Brocade device boots, the system automatically sets default TCAM partitions. You cancustomize TCAM settings to best fit the specific tasks your devices are performing.The default TCAM settings are the same as the default partition percentage settings. For moreinformation about the default TCAM partitioning profiles for the Brocade NetIron XMR and BrocadeMLX series devices, refer to the Brocade MLX Series and NetIron Family Configuration Guide.Changing TCAM partition profilesTCAM is partitioned on the Brocade NetIron XMR and Brocade MLX series routers using a variety ofprofiles that you can select depending on your application. To implement TCAM partition profiles,enter the cam-partition profile command.cam-partition profileSyntax: cam-partition profile [ipv4 | ipv4-ipv6 | ipv4-vpls | ipv4-vpn | ipv6 | l2-metro | l2-metro-2| mpls-l3vpn | mpls-l3vpn-2 | mpls-vpls | mpls-vpls-2 | mpls-vpn-vpls | multi-service]You can change the default settings based on your specific needs. Brocade provides the followingTCAM partitioning profiles for the Brocade NetIron XMR and Brocade MLX series routers:• ipv4 - Optimized for IPv4 applications.• ipv4-ipv6 - Optimized for IPv4 and IPv6 dual-stack applications.• ipv4-vpls - Optimized for IPv4 and MPLS VPLS applications.• ipv4-vpn - Optimized for IPv4 and MPLS Layer 3 VPN applications.• ipv6 - Optimized for IPv6 applications.• l2-metro and l2-metro-2 - Optimized for Layer 2 Metro applications.• mpls-l3vpn and mpls-l3vpn-2 - Optimized for MPLS Layer 3 VPN applications.• mpls-vpls and mpls-vpls-2 - Optimized for MPLS VPLS applications.• mpls-vpn-vpls - Optimized for MPLS Layer 3 and Layer 2 VPN applications.• multi-service - Optimized for Multi-Service applications.Brocade MLX Series and Brocade NetIron XMR Diagnostic Guide 1753-1002426-02